Bug 305148

Summary: Setting the resolution of the screens in multiscreen environment will cause black screen.
Product: [Applications] systemsettings Reporter: Yichao Zhou <broken.zhou>
Component: kcm_randrAssignee: Gustavo Pichorim Boiko <gustavo.boiko>
Status: RESOLVED FIXED    
Severity: normal CC: hbock
Priority: NOR    
Version First Reported In: 4.9.0   
Target Milestone: ---   
Platform: Ubuntu   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Yichao Zhou 2012-08-14 16:22:21 UTC 
I'm using AMD/INTEL card with xf86-video-intel/amd with newest archlinux.(kde 4.9)

This is my laptop. And I use one additional screen.

I don't know how to choose the Product and Component.


If I open system setting->Display and monitor, I can see two screen: LVDS1 and HDMI1.

The standard resolution of LVDS1 is 1366x768, but now it is 1024*768.
The standard resolution of HDMI is 1920x1080, but now it is also 1024*768.

I want to close LVDS1 and set the resolution of HDMI correctly.  So I disable the size of LVDS1 and set the HDMI.  After  I apply my setting, my HDMI output will become black.

I don't know the main point of this problem.  Maybe someone could tell me how to test it further?  Thanks.

Reproducible: Always
Comment 1 Yichao Zhou 2012-08-14 16:25:51 UTC 
By the way,  command
  xrandr --output HDMI1 --auto --output LVDS1 --off
works well for me.  So I believe this is a bug.
Comment 2 Yichao Zhou 2013-09-07 08:18:29 UTC 
I think that's fixed.